When Pyun Seon Jinju has to pay for her High School funds she desperately seeks out a job. After lying to her father who thinks she is attending a Public School she moves in with her childhood friend Min Jun who also attends their Performing Arts High School. When offered a babysitting job by a elderly women Seon Jinju doesn't hesitate to take the offer. After getting accepted by what she believes is a babysitting company she finds out that the kids she expected to take care of weren't actually kids at all but a new Rookie group she would be watching over. Follow Seon Jinju though out her journey in high school and as she cares for the newly debuting group BANGTAN BOYS AKA BTS.